:root {
    --bg: #0a1119;
    --panel: #121c28;
    --panel-2: #182433;
    --text: #edf2f7;
    --muted: #9fb2c4;
    --border: #283a4b;
    --accent: #f4c44d;
    --success: #2ecc71;
    --error: #ff6b6b;
    --info: #7cc7ff;
}
* { box-sizing: border-box; }
body.admin-body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, Arial, sans-serif; }
a { color: var(--accent); text-decoration: none; }
.admin-shell { display: grid; grid-template-columns: 260px minmax(0,1fr); min-height: 100vh; }
.narrow-shell { grid-template-columns: minmax(0, 820px); justify-content: center; align-content: center; padding: 24px; }
.admin-sidebar { padding: 28px 20px; background: #0f1822; border-right: 1px solid rgba(255,255,255,0.06); }
.admin-sidebar h1 { margin: 0 0 18px; }
.admin-sidebar nav { display: grid; gap: 10px; }
.admin-sidebar nav a { padding: 11px 14px; border-radius: 12px; background: rgba(255,255,255,0.03); color: var(--text); }
.admin-main { padding: 26px; }
.admin-card, .stat-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.025));
    border: 1px solid var(--border);
    border-radius: 22px;
}
.admin-card { padding: 24px; }
.admin-header { display: flex; justify-content: space-between; gap: 18px; align-items: center; margin-bottom: 20px; }
.admin-header p { color: var(--muted); margin: 6px 0 0; }
.notice { margin-bottom: 18px; padding: 14px 16px; border-radius: 14px; border: 1px solid transparent; }
.notice.success { background: rgba(46,204,113,0.1); border-color: rgba(46,204,113,0.35); }
.notice.error { background: rgba(255,107,107,0.1); border-color: rgba(255,107,107,0.35); }
.notice.info { background: rgba(124,199,255,0.1); border-color: rgba(124,199,255,0.35); }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card { padding: 18px; display: grid; gap: 6px; }
.stat-card strong { font-size: 1.55rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 20px; overflow: hidden; }
th, td { padding: 14px; border-bottom: 1px solid rgba(255,255,255,0.06); text-align: left; vertical-align: top; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
.full-width { grid-column: 1 / -1; }
label { display: grid; gap: 8px; color: var(--muted); font-size: 0.95rem; }
input, textarea, select {
    width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border);
    background: var(--panel); color: var(--text); font: inherit;
}
textarea { resize: vertical; }
.button {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 16px; border-radius: 12px; border: 1px solid transparent; background: var(--accent); color: #101010;
    font-weight: 800; cursor: pointer;
}
.button-secondary { background: transparent; color: var(--text); border-color: var(--border); }
.stack-form { display: grid; gap: 14px; }
.editor-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; margin-bottom: 18px; }
.mode-grid { align-items: start; }
.builder-toolbar, .nested-header, .builder-head { display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.toolbar-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.builder-block { margin-top: 16px; padding: 16px; border-radius: 18px; background: var(--panel); border: 1px solid var(--border); }
.builder-actions-inline { display: flex; gap: 8px; }
.builder-actions-inline button, .nested-header button, .danger-link {
    padding: 8px 10px; border-radius: 10px; border: 1px solid var(--border); background: transparent; color: var(--text); cursor: pointer;
}
.nested-items { display: grid; gap: 10px; }
.nested-item { padding: 12px; background: rgba(255,255,255,0.03); border-radius: 14px; display: grid; gap: 8px; }
.empty-builder, .empty-state { margin-top: 16px; padding: 18px; border-radius: 18px; background: rgba(255,255,255,0.03); color: var(--muted); }
.code-editor { min-height: 360px; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 14px; background: #0d151e; }
.preview-box { margin-top: 16px; border: 1px solid var(--border); border-radius: 18px; overflow: hidden; }
.preview-label { padding: 12px 14px; background: rgba(255,255,255,0.03); color: var(--muted); }
.preview-box iframe { width: 100%; min-height: 320px; border: 0; background: #fff; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.sticky-actions {
    position: sticky; bottom: 16px; padding: 14px; background: rgba(10,16,24,0.92); backdrop-filter: blur(14px);
    border: 1px solid rgba(255,255,255,0.06); border-radius: 18px;
}
.split-card { display: grid; gap: 16px; }
.quick-links { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.quick-links a { padding: 14px; border-radius: 16px; background: var(--panel); border: 1px solid var(--border); color: var(--text); }
@media (max-width: 1000px) {
    .admin-shell { grid-template-columns: 1fr; }
    .admin-sidebar { border-right: 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
}
@media (max-width: 780px) {
    .editor-grid, .form-grid, .stats-grid { grid-template-columns: 1fr; }
    .admin-header, .builder-toolbar, .nested-header, .builder-head { flex-direction: column; align-items: flex-start; }
    .admin-main { padding: 16px; }
}